The sentence that uses Standard English is The boy had grown up very quickly.
Standard English uses correct grammar and vocabulary, and the first sentence doesn't - it should be <em>The boy grew up very quickly.</em>
That meas 760x100=76000
The number is 76,000 = seventy six thousand.
Can you please take my cat to my cousins for me please?
In experimental physics, reverberation produces echo and thus makes undesirable sound. An echo is a sound reflected off of a surface. In a big hall, it interferes with the actual sound. It gives confusion when people are having a conversation.
Actually, Lisa skates better than he
Actually, <em>he </em>skates better than Lisa
Because in elliptical clauses words are purposely left out because of pattern or logic of the sentence.
(Im not 100% sure ive just started learning it but it seems logical sorry if im not helpful)